Chair



FIG. 1 is a perspective view of a design for a chair;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a right side view thereof; left side being a mirror image of FIG. 4;

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof. 

CLAIM The ornamental design for a chair, as shown and described. 